[Eranga]

I'm not sure how and why you going to use algorithms for this. In simple way you can read the file and get the numbers of each columns. As i said earlier, space in between two numbers of a each line is important for my application. I assumed that the space is two tabs.

Code:

        FileInputStream fis = null;
        try {
            fis = new FileInputStream("files/ReadFileByLines.txt");
            InputStreamReader isr = new InputStreamReader(fis);
            LineNumberReader lnr = new LineNumberReader(isr);
            
            String line = null;
            while((line = lnr.readLine()) != null){
                
                StringTokenizer st1 = new StringTokenizer(line, "\t\t");
                
                String s1 = st1.nextToken();
                String s2 = st1.nextToken();
                String s3 = st1.nextToken();
                
                System.out.println(s1 + "\t" + s2 + "\t" + s3);
            }
            System.out.println("Total number of lines on the file " +
                    "is " + lnr.getLineNumber());
        } 
        catch (IOException ex) {
            System.out.println(ex.getMessage());
        }        
        finally {
            try {
                fis.close();
            } 
            catch (IOException ex) {
                System.out.println(ex.getMessage());
            }
        }